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   Re: Inquiry: Reordering XML elements through XSL

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  • From: James Clark <jjc@jclark.com>
  • To: XML-Dev Mailing list <xml-dev@ic.ac.uk>
  • Date: Sat, 19 Jun 1999 10:12:32 +0700

"G. Ken Holman" wrote:

> >However, this still leaves the reverse problem of translating from a tag
> >order of AAABBB to ABABAB.

> <xsl:stylesheet xmlns:xsl="http://www.w3.org/XSL/Transform/1.0"
>                 indent-result="yes">
> <xsl:template match="/*">                       <!--document element-->
>   <xsl:copy>
>     <xsl:copy-of select="@*"/>                     <!--preserve atts-->
>     <xsl:call-template name="do-rest"/>
>   </xsl:copy>
> </xsl:template>
> <xsl:template name="do-rest">
>   <xsl:param-variable name="index" expr="1"/>   <!--init'd only once-->
>   <xsl:if test="//a[$index] | //b[$index]">
>     <xsl:copy-of select="//a[$index]"/>        <!--preserve elements-->
>     <xsl:copy-of select="//b[$index]"/>
>     <xsl:call-template name="do-rest">                   <!--recurse-->
>       <xsl:param name="index" expr="$index + 1"/>
>     </xsl:call-template>
>   </xsl:if>
> </xsl:template>
> </xsl:stylesheet>

A simpler approach is:

perform the following on the document element "test"
  for each a element
    copy the element
    let n be the position of this a element (ie this element is the n-th
a element)
    copy the n-th of the following b siblings


<xsl:stylesheet xmlns:xsl="http://www.w3.org/XSL/Transform/1.0"
<xsl:template match="test">
   <xsl:for-each select="a">
     <xsl:copy-of select="."/>
     <xsl:variable name="n" expr="position()"/>
     <xsl:copy-of select="from-following-siblings(b[$n])"/>


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